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Affordable Care Act

The ACA MarketplaceS

Change in February effectuated enrollment, by state, 2025-2026

How Has ACA Marketplace Enrollment Changed Across States in 2026?

ACA Marketplace enrollment fell this year in every state except New Mexico, which was the only state to fully replace the enhanced premium tax credits that expired last year with a state-funded subsidy, according to a new KFF analysis of effectuated enrollment data. The Marketplace enrollment decline—the first in seven years—follows several years of rapid enrollment growth and coincides with the end of the enhanced federal subsidies.

How Much and Why ACA Marketplace Premiums Are Going Up in 2027

ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF’s updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia. This is the second consecutive year of double-digit premium hikes. Last year’s median nationwide proposed rate change was 18%, and the median finalized rate change was 20%. While this proposed rate change is lower than last year, it represents the second-highest requested rate change since 2018, as premium growth had been relatively flat in this market for several years.

About the ACA

Promotional image for KFF video How Affordable is the Affordable Care Act

Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

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  • How Will the Uninsured in Pennsylvania Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Pennsylvania, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Pennsylvania are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Tennessee Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Tennessee, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Tennessee are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Washington Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Washington, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Washington are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Wisconsin Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Wisconsin, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Wisconsin are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Wyoming Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Wyoming, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Wyoming are eligible for Medicaid or financial assistance in…

  • Data Note: How Many People Have Nongroup Health Insurance?

    Issue Brief

    The implementation of the Affordable Care Act (ACA) has focused attention on the composition of the nongroup market: how it looked before the new regulatory provisions take effect and how it will change afterwards. There are several ways of answering this question, depending on the time period for measuring enrollment and the information source. There is substantial turnover among people with nongroup coverage, which means that the number of people covered at the beginning of…

  • Medical Debt Among People With Health Insurance

    Report

    This report examines the causes and contributors to medical debt, medical bankruptcy, and other difficulties with medical bills among people with insurance. Through in-depth interviews of nearly two-dozen people and quantitative analysis of national survey data, the authors of this report find that in-network and out-of-net-work cost sharing primarily contribute to medical debt among the insured.

  • Nearly 54 Million Americans Have Pre-Existing Conditions That Would Make Them Uninsurable in the Individual Market without the ACA

    News Release

    Almost Half of Non-Elderly Families have At Least One Adult with a Pre-Existing Condition An updated KFF analysis estimates that almost 54 million people – or 27% of all adults under 65 —have pre-existing health conditions that would likely have made them uninsurable in the individual markets that existed in most states before the Affordable Care Act. The share of adults under 65 with such declinable pre-existing conditions varies significantly across states, from at least…

  • Poll: Democrats Say They Are Hearing Enough From Presidential Candidates About Medicare-for-All and Expanding Coverage, But Want Them to Talk More about Health Costs and Women’s Health Care

    News Release

    Heading into tonight’s Democratic primary debate, most Democrats and Democratic-leaning independents say the candidates are spending the right amount or too much time talking about ways to provide coverage to more Americans and Medicare-for-all, two topics that have dominated health care discussions in the past three rounds of Democratic debates, the latest KFF Health Tracking Poll finds. In contrast, large shares of Democrats and Democratic-leaning independents say that the presidential candidates are spending too little…

  • ACA Open Enrollment: If You Shop on Private Websites Instead of HealthCare.gov

    Fact Sheet

    Marketplace plans can now be sold through private websites, sometimes described as "direct enrollment” sites or “certified enrollment partner” sites. This short fact sheet explains how these sites and the plans they offer may differ from what consumers will find on HealthCare.gov.